how do i figure the sppeed etc. of spinning that is caused by a force?

A door can only move radially around the hinge, so one may consider only the component of the force in this direction.
torque=force*distance.

Sum all the torques... the you can use

torque=rotational inertia*angular acceleration

look at this for some extra info.

EDIT: URL added

[edited by - dmounty on October 11, 2003 7:31:48 PM]